Measles (B05) ICD-10-CM
The B05 code range covers measles with 10 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- morbilli
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- subacute sclerosing panencephalitis A81.1
Codes in the B05 Range 10 codes · 8 billable
- B05 MeaslesNon-billable
- B05.0 Measles complicated by encephalitis
- B05.1 Measles complicated by meningitis
- B05.2 Measles complicated by pneumonia
- B05.3 Measles complicated by otitis media
- B05.4 Measles with intestinal complications
- B05.8 Measles with other complicationsNon-billable
- B05.81 Measles keratitis and keratoconjunctivitis
- B05.89 Other measles complications
- B05.9 Measles without complication
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B05 range.
Measles
A highly contagious infectious disease caused by MORBILLIVIRUS, common among children but also seen in the nonimmune of any age, in which the virus enters the respiratory tract via droplet nuclei and multiplies in the epithelial cells, spreading throughout the MONONUCLEAR PHAGOCYTE SYSTEM.
About the B05 Code Range
Measles is a highly contagious infection caused by a virus called Morbillivirus. This category separates measles with complications from measles without them.
The subdivisions distinguish complications involving the brain, the membranes around it, the lungs, the middle ear, or the intestines. B05.8 groups other complications. It separates eye complications under B05.81 from other measles complications under B05.89. B05.9 describes measles without a complication.
Questions About This Page
How many billable codes are in the B05 range?
Of the 10 codes in this range, 8 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B05 range classify?
The range classifies measles. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
